Contents :

Practical
-Strip out components from frost free refrigerator
-Check electrical wiring in frost free refrigerator
-Check and test defrost heater
-Check and test Timer and thermostat in frost free refrigerator
-Retroit CFC filled domestic Refrigerator with HFC’s
-Retroit CFC filled domestic Refrigerator with Hidro Carbon refrigerant
-Repair /Service of HFC filled domestic refrigerator
-Repair /Service Hydrocarbon filled Domestic refrigerator
-Dismantle window Air – conditioner
-Identify and inspect the parts of window A/c
-Check and service the components of window a/c
-Check relative humidity of conditoned room
Service and assemble window A/c
-Check and service A/C blower motor
-Leak test in window A/C
-Clean & flush contamination in condenser and evaporator
-Service air cooled condenser in window A/c
-Practice of removal and replacement of capillary tube in room A/c
-Check electrical wiring of window a/c by CSR circuit
-Test compressor without relay in CSR circuit
-Check electrical wiring of window A/c by PSC method
-Dry Service of windos A/C
-Leak test in condensor with pressur raise method
-Leak test in evaporator with Vaccum Method
-Braze the leak spots in window A/C
-Immersion method for leak test
-Evacute hermetic system in room air conditioners
-Charge gas in room Air -Conditioner
-Measure the velocity of air flow and tempressure of room A/C
-Troubleshoot and repair for the symptom “Compressor does not starts “
-Troubleshoot and repair for the symptom “Compressor trips frequently“
-Troubleshoot and repair for the symptom “ Poor cooling “ and for the sub symptom “Evapourator coil frosing“
-Troubleshoot and repair for the symptom “Poor cooling “ and for the sub symptom “Unit running continuously “
-Troubleshoot and repair for the symptom “Water leakage in indoor unit “

Theory
-Study of Frost free Refrigerators
-Refrigeration system of Frost free Refregerators
-Electrical components and their functions in a Frost free Refregerator
-Study of wiring ,Automatic defrost ,heater , Timer fan motor and air duct system
-Methodology of Retrofitting
-Details of CFC filled refrigerator with Hydro Carbon blend
-Refregerators using diffirent refrigerants
-Introduction of Air -conditioning
-Constructional details of window Air – conditioner
-Air – Conditioning System
-Air – Conditioning System
-Electrical components of window air -conditioner
-Split Air- conditioners
-Split air – conditional and its constructional details
-Comparision ,advantage and disadvantage of split A/c & Window A/C
Air cooled condensers
-Constructional details and selection of air cooled condensers
-Air filters ,their types and specification
-Air flow Measurements
-Velocity meters
-Principle of pipe sizing
-Study of service valves
-Defective window model Room Air – Conditioner - “Compressor does not start “
-Defects in windos model Air -Conditioner -”Compressor trip frequetly “
-Defects in window air -conditioner -”Poor cooling “ Evaporate coil frosting
-Defects in window air -conditioner -”Poor cooling “ - unit runnig continuosly
-Defects in Split type air -conditioner - ’’water leakage in indoor unit ’’